Remove device enumeration, caching and monitoring from MediaStreamManager.

content/common/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 if (is_mac) {
@@ skipping 187 matching lines @@
     "mac/font_descriptor.h",
     "mac/font_descriptor.mm",
     "mac/font_loader.h",
     "mac/font_loader.mm",
     "manifest_manager_messages.h",
     "media/aec_dump_messages.h",
     "media/audio_messages.h",
     "media/cdm_info.cc",
     "media/cdm_messages.h",
     "media/cdm_messages_enums.h",
+    "media/media_devices.cc",
+    "media/media_devices.h",
     "media/media_metadata_sanitizer.cc",
     "media/media_metadata_sanitizer.h",
     "media/media_player_delegate_messages.h",
     "media/media_player_messages_android.h",
     "media/media_session_messages_android.h",
     "media/media_stream_messages.h",
     "media/media_stream_options.cc",
     "media/media_stream_options.h",
     "media/media_stream_track_metrics_host_messages.h",
     "media/midi_messages.h",
@@ skipping 363 matching lines @@
     "//third_party/WebKit/public:mojo_bindings",
     "//ui/gfx/geometry/mojo",
     "//url/mojo:url_mojom_gurl",
     "//url/mojo:url_mojom_origin",
   ]
 
   export_class_attribute = "CONTENT_EXPORT"
   export_define = "CONTENT_IMPLEMENTATION=1"
   export_header = "content/common/content_export.h"
 }